perl/perl-5.27.5-Avoid-a-segfaul...

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From e7e69c85c7e8e0cb75b831e606ad4f26f18b11ff Mon Sep 17 00:00:00 2001
From: Nicolas R <atoomic@cpan.org>
Date: Mon, 31 Oct 2016 11:53:17 -0600
Subject: [PATCH] Avoid a segfault when untying an object
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Check if the tied object has a stash set
before calling UNTIE method.
Signed-off-by: Petr Písař <ppisar@redhat.com>
---
pp_sys.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/pp_sys.c b/pp_sys.c
index 672e7de08e..6d4dd86b7f 100644
--- a/pp_sys.c
+++ b/pp_sys.c
@@ -1017,7 +1017,7 @@ PP(pp_untie)
if ((mg = SvTIED_mg(sv, how))) {
SV * const obj = SvRV(SvTIED_obj(sv, mg));
- if (obj) {
+ if (obj && SvSTASH(obj)) {
GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
CV *cv;
if (gv && isGV(gv) && (cv = GvCV(gv))) {
--
2.13.6